"WHAT TOOL AM I? (EVERY ONE READ THIS JOKE!)" joke

This useful tool, commonly found in the range of 8 inches long. The
functioning of which is enjoyed by members of both sexes, is usually
found hung, dangling loosely, ready for instant action. It boasts of
a clump of little hairy things at one end and a small hole at the
other. In use, it is quickly inserted, almost always willingly, sometimes
slowly, sometimes quickly, into a warm, fleshy, moist opening where it is
thrust in and drawn out again and again many times in succession, often
quickly and accompanied by squirming bodily movements. Anyone found listening
in will most surely recognize the rhythmic, pulsing sound, resulting
from the well lubricated movements. When finally withdrawn, it leaves
behind a juicy, frothy, sticky white substance, some of which will need
cleaning from the outer surfaces of the opening and some from its long
glistening shaft. After everything is done and the flowing and
cleansing liquids have ceased emanating, it is returned to its freely hanging
state of rest, ready for yet another bit of action, hopefully reaching
its bristling climax twice or three times a day, but often much less.

W H A T A M I? ?
As you may have already guessed, the answer to the riddle is none other
than your very own
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Tooth Brush.